A US liquid gallon equals 4 US quarts, or exactly 3.785411784 liters.
Gallon to Ounce
Convert Gallon to Ounce instantly. Free online cooking unit converter with exact formula, conversion table and FAQ.
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Cooking Converter
Convert cooking volume and mass units used in recipes and nutrition workflows.
Context values
Some unit families need one extra value for a physically accurate result.
An avoirdupois ounce equals 1/16 pound, or about 28.35 grams, common in US recipes.
oz = gal × 133.5264712
Results update instantly for Gallon to Ounce conversions.
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Formula
oz = gal × 133.5264712
gal = oz × 0.007489151707
Conversion table
| 1 gal | 133.526471 oz |
| 5 gal | 667.632356 oz |
| 10 gal | 1335.264712 oz |
| 20 gal | 2670.529425 oz |
| 50 gal | 6676.323562 oz |
| 100 gal | 13352.647123 oz |
| 500 gal | 66763.235616 oz |
| 1000 gal | 133526.471232 oz |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the gallon (gal). A US liquid gallon equals 4 US quarts, or exactly 3.785411784 liters.
What is the destination unit in this conversion?
The destination unit is the ounce (oz). An avoirdupois ounce equals 1/16 pound, or about 28.35 grams, common in US recipes.
How do I convert gallon to ounce?
Multiply the gallon value by 133.5264712. For example, 10 gal × 133.5264712 = 1335.264712 oz.
Is the gallon to ounce conversion exact?
Yes. This conversion uses a fixed factor defined for cooking measurement standards, so results are consistent every time.
Where is this conversion commonly used?
It's used when following recipes, adjusting ingredient quantities, or converting between US customary and metric cooking measurements.
Can I convert ounce back to gallon?
Yes. Multiply the ounce value by 0.007489151707 to get gallon.
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About this conversion
This page converts gallon (gal) to ounce (oz) within the cooking converter.
A US liquid gallon equals 4 US quarts, or exactly 3.785411784 liters. An avoirdupois ounce equals 1/16 pound, or about 28.35 grams, common in US recipes.
The formula is oz = gal × 133.5264712, based on each unit's fixed relationship to the cooking converter's reference units.
Results are consistent because the conversion relies on a fixed numerical ratio rather than an estimate.
Use the calculator above for instant results, or the table below for common gallon values already converted to ounce.